XPost: linux.debian.kernel
Control: tags -1 + moreinfo upstream
Control: done -1 6.12.25-1
Control: done -1 6.14.3-1~exp1
Hi Laurent,
On Sun, May 04, 2025 at 09:42:45PM +0200, Laurent Bonnaud wrote:
Package: src:linux
Version: 6.12.21-1
Severity: normal
Dear Maintainer,
this system is running Debian 12 and a 6.12.x kernel from sid. It is used as an NFS server for tens of clients.
After 20 days of uptime, this warning occurred:
[1717110.406673] ------------[ cut here ]------------
[1717110.406679] cb_status=-521 tk_status=-10036
[1717110.406726] WARNING: CPU: 1 PID: 477302 at fs/nfsd/nfs4callback.c:1339 nfsd4_cb_done+0x514/0x580 [nfsd]
[1717110.406872] Modules linked in: cpuid cts rpcsec_gss_krb5 nf_tables libcrc32c nfnetlink tcp_diag udp_diag inet_diag binfmt_misc ipmi_ssif nls_ascii nls_cp437 vfat fat intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_
common skx_edac skx_edac_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 aesni_intel gf128mul crypto_simd quota_v2 quota_tree cryptd mgag200 dell_pc rapl intel_
cstate platform_profile drm_shmem_helper dell_smbios dcdbas drm_kms_helper iTCO_wdt dell_wmi_descriptor wmi_bmof intel_pmc_bxt intel_uncore iTCO_vendor_support pcspkr i2c_algo_bit watchdog mei_me mei intel_pch_thermal acpi_ipmi ipmi_si ipmi_devintf ipmi_
msghandler button joydev evdev sg nfsd nfs_acl lockd auth_rpcgss grace drm sunrpc dm_mod efi_pstore loop configfs efivarfs ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 crc32c_generic hid_generic usbhid hid xhci_pci ixgbe xhci_hcd ahci xfrm_algo sd_
mod dca libahci
[1717110.407036] mdio_devres crc32_pclmul crc32c_intel libata megaraid_sas usbcore i2c_i801 tg3 i2c_smbus scsi_mod libphy usb_common lpc_ich mdio scsi_common wmi
[1717110.407068] CPU: 1 UID: 0 PID: 477302 Comm: kworker/u16:4 Not tainted 6.12.21-amd64 #1 Debian 6.12.21-1
[1717110.407077] Hardware name: Dell Inc. PowerEdge R540/0NJK2F, BIOS 2.23.0 01/09/2025
[1717110.407081] Workqueue: rpciod rpc_async_schedule [sunrpc] [1717110.407231] RIP: 0010:nfsd4_cb_done+0x514/0x580 [nfsd]
[1717110.407363] Code: 5d 41 5e 41 5f e9 fc 82 d5 ff 80 3d da ec 01 00 00 0f 85 4e fb ff ff 48 c7 c7 26 ab 98 c0 c6 05 c6 ec 01 00 01 e8 0c f9 f4 cb <0f> 0b 8b 73 54 e9 31 fb ff ff 41 89 c6 e9 8b fc ff ff 45 31 f6 e9
[1717110.407369] RSP: 0018:ffffa90e845b7dc0 EFLAGS: 00010286
[1717110.407375] RAX: 0000000000000000 RBX: ffff96aaaa5fe100 RCX: 0000000000000027
[1717110.407379] RDX: ffff96aea00a1788 RSI: 0000000000000001 RDI: ffff96aea00a1780
[1717110.407383] RBP: ffff96aa6581c9f0 R08: 0000000000000000 R09: ffffa90e845b7c40
[1717110.407387] R10: ffffffff8e6b43a8 R11: 0000000000000003 R12: ffff96aa6581c9f0
[1717110.407391] R13: ffff96ad9801d200 R14: 0000000000000001 R15: ffff96a674373600
[1717110.407395] FS: 0000000000000000(0000) GS:ffff96aea0080000(0000) knlGS:0000000000000000
[1717110.407400] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [1717110.407404] CR2: 0000000016fe5000 CR3: 00000001eb422006 CR4: 00000000007706f0
[1717110.407409] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1717110.407412] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[1717110.407416] PKRU: 55555554
[1717110.407419] Call Trace:
[1717110.407424] <TASK>
[1717110.407428] ? nfsd4_cb_done+0x514/0x580 [nfsd]
[1717110.407542] ? __warn.cold+0x93/0xf6
[1717110.407550] ? nfsd4_cb_done+0x514/0x580 [nfsd]
[1717110.407660] ? report_bug+0xff/0x140
[1717110.407670] ? handle_bug+0x58/0x90
[1717110.407678] ? exc_invalid_op+0x17/0x70
[1717110.407685] ? asm_exc_invalid_op+0x1a/0x20
[1717110.407697] ? nfsd4_cb_done+0x514/0x580 [nfsd]
[1717110.407800] ? __pfx_rpc_exit_task+0x10/0x10 [sunrpc]
[1717110.407928] rpc_exit_task+0x5e/0x170 [sunrpc]
[1717110.408045] __rpc_execute+0xb4/0x480 [sunrpc]
[1717110.408181] rpc_async_schedule+0x2f/0x40 [sunrpc]
[1717110.408303] process_one_work+0x174/0x330
[1717110.408313] worker_thread+0x251/0x390
[1717110.408322] ? __pfx_worker_thread+0x10/0x10
[1717110.408328] kthread+0xcf/0x100
[1717110.408334] ? __pfx_kthread+0x10/0x10
[1717110.408339] ret_from_fork+0x31/0x50
[1717110.408346] ? __pfx_kthread+0x10/0x10
[1717110.408350] ret_from_fork_asm+0x1a/0x30
[1717110.408362] </TASK>
[1717110.408365] ---[ end trace 0000000000000000 ]---
Please update to the most current kernel in testing, and actually
ideally to 6.12.25-1 which will migrate to testing soon and report
back if this problem still occurs.
I think this should be fixed by 1b3e26a5ccbf ("NFSD: fix decoding in nfs4_xdr_dec_cb_getattr") upstream, and thus marking it already as
such.
If you can retrigger the bug with 6.12.25-1 and later, please do
reopen the bug and do remove the moreinfo tag so that the bug
re-appears on our radar.
Regards,
Salvatore
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